Microsoft has just released an emergency out-of-band (OOB) update
Microsoft has just released an emergency out-of-band (OOB) update for Windows 11 to fix critical issues introduced in the October 2025 Patch Tuesday update (KB5066835). Here's what you need to know: What Went Wrong • Broken Localhost Connections: The update disrupted HTTP/2 connections to , affecting developers and apps relying on local servers like IIS and ASP.NET. • WinRE Failure: USB keyboards and mice stopped working in the Windows Recovery Environment (WinRE), leaving users unable to troubleshoot or recover their systems. • Peripheral Issues: Logitech devices and File Explorer previews were also affected. Emergency Fix: KB5070773 Microsoft has issued KB5070773 to resolve these problems: • Restores USB functionality in WinRE for Windows 11 versions 24H2 and 25H2. • Fixes the localhost regression caused by HTTP.sys mishandling HTTP/2 handshakes. How to Get the Update • Automatic Installation: The update is rolling out via Windows Update and will in...